From the handbook, page 28:
Non-School Uniform Policy
Students attending school related activities such as ball games, dramas, concerts, Arts and Crafts Festival or other events still represent Whitefield Academy. While the school uniform is not required at such events, students are to dress in a modest, neat manner and fashion that represents and complies with the core values of Whitefield Academy. Students who are not dressed appropriately may be asked to leave the event or school sponsored function.
Dress code for school functions (or while on campus during, before or after school hours) which do not require regular school uniform are casual by design should be dresses that will meet the flamingo test, neat jeans or walking shorts, collared shirts, Whitefield Academy or an appropriate t-shirt only. Tennis shoes, casual shoes and sandals are permitted. Hats, bandannas and boys’ earrings are not permitted.
https://whitefield.org/wp-content/uploads/2014/07/Parent-Student-Handbook-K-12-Current.pdf